For AI agents: read the machine-readable documentation index at /llms.txt or the single-file full reference at /llms-full.txt.
Form a Business

SOILS AND FOUNDATIONS

Philadelphia Code tit. 4, pt. B, ch. 18
in effect

Philadelphia Code Subcode B, § 1809 SHALLOW FOUNDATIONS

SECTION 1809 SHALLOW FOUNDATIONS * * * 1809.5 Frost protection. * * * [Add Section B-1809.5.1 as follows:] B-1809.5.1 Frost line. The frost line for the City of Philadelphia is 30 inches (762 mm). * * *
Source: City of Philadelphia, The Philadelphia Code and Home Rule Charter (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/philadelphia/latest/philadelphia_pa/0-0-0-310405Fetched: 10/27/2026

Starting a business in Pennsylvania? Pennsylvania LLC guide: costs and requirements